NXP SSL21101T

Description

The SSL21101T is a Switch Mode Power Supply (SMPS) driver IC. It is designed to drive LED devices typically in flyback configurations. The device includes a high-voltage power switch and a circuit enabling start-up directly from the rectified mains voltage. It has accurate control of the output current.

Features

•  Small Printed-Circuit Board (PCB) footprint and compact solution with a small form factor
•  Ease of integration
•  Low component count (complete application with about 25 components)
•  AC/DC offline non-dimmable LED driver from 100 V (AC) to 230 V (AC)
•  Primary side sensing (no optocoupler required)
•  True current source behavior:
•  LED current independent of mains voltage, LED voltage, temperature and coil
• variation
•  High LED current accuracy (3 %)
•  Efficiency up to 90 % depending on the application
•  Smart Digital Control (SDC) to deal with all kind of applications:
•  High-Power Factor (PF; > 0.95) and low Total Harmonic Distortion Mode (THD
• down to 20 %)
•  Small form factor (low LED current mode ripple with small electrolytic capacitors) -
• compatible with exception clause IEC61000-3-2
•  Internal protections:
•  Short-winding protection
•  Internal OverTemperature Protection (OTP)
•  LED short protection
•  LED open protection
•  UnderVoltage LockOut (UVLO)
•  External temperature protection with built-in Negative Temperature Coefficient (NTC)
•  Internal supply voltage generation enabling start-up from the rectified mains voltage
•  Compatible with wall switches with built-in indication light during standby
•  SO14 package

Typical applications

• LED strings (for example: retail display; up to 15 W)
• LED modules, mains AC/DC converter (for example: down-lights, up to 15 W)
• SSL, retrofit lamps (for example: small-size light bulbs, LED spots, up to 10 W or

More information

• Datasheet
• IC product information